Amplitude calibration with pointing correction
US8427368B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2011 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Nov 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18519
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Gain measurements of one or more calibration signals communicated by one or more calibration stations and retransmitted by one or more satellite elements may be obtained. One or more weights indicating confidence in the gain measurements for the one or more satellite elements may be computed. A geodetic radiation gain pattern of a satellite element that is a function of a roll, a pitch, and a yaw of a satellite may be accessed. Partial derivatives of the geodetic radiation pattern may be computed with respect to roll, pitch and yaw at one or more points in the first geodetic radiation pattern corresponding to one or more geographic locations. A cost function may be generated and one or more unknown variables may be computed by reducing the cost function. A satellite pointing error may be determined using the computed variable values and the pointing error may be stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.